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*/
//!
//! \file      hal_kerneldll_next.h 
//! \brief         Fast Compositing dynamic kernel linking/loading definitions 
//!
#ifndef __HAL_KERNELDLL_NEXT_H__
#define __HAL_KERNELDLL_NEXT_H__

#include "vp_common.h"

#define DL_MAX_SEARCH_FILTER_SIZE 10  // max number of entries to describe a compositing filter

#define DL_MAX_KERNELS 150  // Max component kernels to combine
#define DL_MAX_PATCH_DATA_SIZE 64  // Max size of a patch block
#define DL_MAX_PATCH_BLOCKS 8      // Max number of blocks to patch per patch data
#define DL_MAX_PATCHES 4           // Max patches to use

#define DL_MAX_COMBINED_KERNELS 64  // Max number of kernels in cache
#define DL_MAX_SYMBOLS 100          // max number of import/export symbols in a combined kernels
#define DL_MAX_KERNEL_SIZE (128 * 1024)  // max output kernel size

#define DL_CSC_MAX 6  // 6 CSC matrices max

#ifdef __cplusplus
extern "C" {
#endif  // __cplusplus

typedef enum _MEDIA_CSPACE Kdll_CSpace;

const float g_cCSC_sRGB_stRGB[12] =
{
    0.858824f,  0.000000f,  0.000000f,  16.000000f,   // stR = C0 * sR + C1 * sG + C2  * sB + C3
    0.000000f,  0.858824f,  0.000000f,  16.000000f,   // stG = C4 * sR + C5 * sG + C6  * sB + C7
    0.000000f,  0.000000f,  0.858824f,  16.000000f    // stB = C8 * sR + C9 * sG + C10 * sB + C11
};

const float g_cCSC_stRGB_sRGB[12] =
{
    1.164384f,  0.000000f,  0.000000f, -18.630137f,   // sR   = C0 * stR + C1 * stG + C2  * stB + C3
    0.000000f,  1.164384f,  0.000000f, -18.630137f,   // sG   = C4 * stR + C5 * stG + C6  * stB + C7
    0.000000f,  0.000000f,  1.164384f, -18.630137f    // sB   = C8 * stR + C9 * stG + C10 * stB + C11
};

const float g_cCSC_Identity[12] =
{
    1.0f,  0.0f, 0.0f, 0.0f,
    0.0f,  1.0f, 0.0f, 0.0f,
    0.0f,  0.0f, 1.0f, 0.0f
};

// Generic RGB to YUV conversion matrix from BT.601 standard
const float g_cCSC_BT601_RGB_YUV[9] =
{
    0.299000f,  0.587000f,  0.114000f,
   -0.168736f, -0.331264f,  0.500000f,
    0.500000f, -0.418688f, -0.081312f
};

// Generic RGB to YUV conversion matrix from BT.709 standard
const float g_cCSC_BT709_RGB_YUV[9] =
{
    0.212600f,  0.715200f,  0.072200f,
   -0.114572f, -0.385428f,  0.500000f,
    0.500000f, -0.454153f, -0.045847f
};

// Generic YUV to RGB conversion matrix from BT.601 standard
const float g_cCSC_BT601_YUV_RGB[9] =
{
    1.000000f,  0.000000f,  1.402000f,
    1.000000f, -0.344136f, -0.714136f,
    1.000000f,  1.772000f,  0.000000f
};

// Generic YUV to RGB conversion matrix from BT.709 standard
const float g_cCSC_BT709_YUV_RGB[9] =
{
    1.000000f,  0.000000f,  1.574800f,
    1.000000f, -0.187324f, -0.468124f,
    1.000000f,  1.855600f,  0.000000f
};
// BT2020 RGB to Non-constant YUV conversion matrix from R-REC-BT.2020-1-201406-I!!PDF-E.pdf
const float g_cCSC_BT2020_RGB_YUV[9] =
{
    0.262700f,  0.678000f,  0.059300f,     // Y
    -0.139630f, -0.360370f, 0.500000f,     // U
    0.500000f,  -0.459786f, -0.040214f     // V
};

// BT2020 Non-constant YUV to RGB conversion matrix from R-REC-BT.2020-1-201406-I!!PDF-E.pdf
const float g_cCSC_BT2020_YUV_RGB[9] =
{
    1.000000f, 0.000000f,  1.474600f,     //R
    1.000000f, -0.164553f, -0.571353f,    //G
    1.000000f, 1.881400f,  0.000000f      //B
};

// Layer definition
typedef enum _KDLL_LAYER
{
    Layer_Invalid      = -2,  // Invalid
    Layer_None         = -1,  // None
    Layer_Background   = 0,   // Background      (0)
    Layer_MainVideo    = 1,   // Main video      (1)
    Layer_SubVideo     = 2,   // Secondary video (2)
    Layer_SubPicture1  = 3,   // Sub-picture 1   (3)
    Layer_SubPicture2  = 4,   // Sub-picture 2   (4)
    Layer_SubPicture3  = 5,   // Sub-picture 3   (5) [Gen6]
    Layer_SubPicture4  = 6,   // Sub-picture 4   (6) [Gen6]
    Layer_Graphics     = 14,  // Graphics        (7)
    Layer_RenderTarget = 15   // Render Target
} Kdll_Layer;

// Sampling mode
// Please don't change the order in the enum is setup
typedef enum tagKdll_Sampling
{
    Sample_None   = -2,
    Sample_Source = -1,  // Current source sampling
    Sample_Any    = 0,
    Sample_Scaling_Any,    // Scaling (any scaling factor)
    Sample_Scaling,        // Scaling (above or equal 0.34x)
    Sample_Scaling_034x,   // Scaling 0.34x (below 0.34x)
    Sample_iScaling,       // Scaling (above or equal 0.34x)
    Sample_iScaling_034x,  // Scaling 0.34x (below 0.34x)
    Sample_iScaling_AVS,   //AVS Interlace Scaling on g75+
    Sample_Scaling_AVS,    // AVS Scaling on g575+
} Kdll_Sampling;

// scaling ratio mode
typedef enum tagKdll_scalingratio
{
    Scalingratio_Any = 0,    // By default, or scaling ratio <=1/8
    Scalingratio_over1,      // Scaling ratio > 1 +1/6;
    Scalingratio_b1p2to1,    // Scaling ratio (1/2, 1+1/6]; //NV12 need 1+1/6 support by kernel
    Scalingratio_b1p4to1p2,  // Scaling ratio (1/4, 1/2];
    Scalingratio_b1p8to1p4,  // Scaling ratio (1/8, 1/4]
} Kdll_Scalingratio;

// Gen7+ : Shuffle data returned by Sample_8x8 message
typedef enum tagKdll_Shuffling
{
    Shuffle_None = -1,
    Shuffle_Any  = 0,
    Shuffle_All_8x8_Layer,  // Mix of Sample_8x8 and others. Shuffle all 8x8 layer.
    Shuffle_RenderTarget    // All layers are Sample_8x8. Shuffle only in RenderTarget
} Kdll_Shuffling;

// Gen7+ : Rendering method
typedef enum tagKdll_RenderMethod
{
    RenderMethod_MediaObject       = 0,
    RenderMethod_MediaObjectWalker = 1
} Kdll_RenderMethod;

// Gen7+ : Set CSC Coefficients method
typedef enum tagKdll_SetCSCCoeffMethod
{
    SetCSCCoeffMethod_Curbe = 0,
    SetCSCCoeffMethod_Patch = 1
} Kdll_SetCSCCoeffMethod;

// Processing mode
typedef enum tagKdll_Processing
{
    Process_None   = -2,
    Process_Source = -1,  // Current source processing
    Process_Any    = 0,
    Process_Composite,     // Composite 2 layers
    Process_XORComposite,  // XOR mono composite.
    Process_PBlend,        // Partial Blend 2 layers  - 8-bits alpha
    Process_CBlend,        // Constant Blend 2 layers - 8-bits alpha
    Process_SBlend,        // Source Blend 2 layers   - 8-bits alpha
    Process_SBlend_4bits,  // Source Blend 2 layers   - 4-bits alpha
    Process_CSBlend,       // Constant multiply Source Blend 2 layers - 8-bits alpha (Source is NOT premultiplied)
    Process_CPBlend,       // Constant multiply Source Blend 2 layers - 8-bits alpha (Source is Premultiplied)
    Process_DI,            // Deinterlacing
    Process_DN,            // Denoise
    Process_DNDI           // DNDI
} Kdll_Processing;

typedef enum tagKdll_CSCType
{
    CSC_YUV_RGB = 0,  // YUV to RGB color space conversion
    CSC_RGB_YUV = 1,  // RGB to YUV color space conversion
    CSC_YUV_YUV = 2,  // YUV to YUV color space conversion
    CSC_RGB_RGB = 3   // RGB to RGB color space conversion
} Kdll_CSCType;

// CSC Coefficients ID
// Worst case we could have any many CSCs are there are number of layers (xvYcc case). So, 6 CoeffIDs defined to support 6 layers max
typedef enum tagKdll_CoeffID
{
    CoeffID_Src0   = -5,  // Src0 coefficients
    CoeffID_Src1   = -4,  // Src1 coefficients
    CoeffID_Source = -3,  // Current source coefficients
    CoeffID_Any    = -2,  // Any matrix
    CoeffID_None   = -1,  // No matrix -> no CSC
    CoeffID_0      = 0,
    CoeffID_1      = 1,
    CoeffID_2      = 2,
    CoeffID_3      = 3,
    CoeffID_4      = 4,
    CoeffID_5      = 5
} Kdll_CoeffID;

// DL Parser State
typedef enum tagKdll_ParserState
{
    Parser_Invalid = -1,           // invalid state
    Parser_Begin   = 0,            // start dynamic linking
    Parser_SetRenderMethod,        // MEDIA_OBJECT or MEDIA_OBJECT_WALKER rendering
    Parser_SetupLayer0,            // setup layer 0
    Parser_SetupLayer1,            // setup layer 1
    Parser_SetParamsLayer0,        // setup parameters for layer 0
    Parser_SetParamsLayer1,        // setup parameters for layer 1
    Parser_SetParamsTarget,        // setup parameters for render target
    Parser_SampleLayer0,           // sample layer 0
    Parser_SampleLayer0Mix,        // sample layer 0 need inter mix (interlaced scaling)
    Parser_SampleLayer0ColorFill,  // sample layer 0 colorfill
    Parser_RotateLayer0Check,      // check if layer 0 needs preComp rotation
    Parser_RotateLayer0,           // PreComp layer 0 rotate
    Parser_SampleLayer0Done,       // sample layer 0 is complete
    Parser_ShuffleLayer0,          // shuffle layer 0
    Parser_SampleLayer1,           // sample layer 1
    Parser_SampleLayer1Done,       // sample layer 1 is complete
    Parser_ShuffleLayer1,          // shuffle layer 1
    Parser_SampleLayer0SelectCSC,  // decided whether CSC be selected for Mix or jump to Parser_SampleLayer0Mix directly
    Parser_SetupCSC0,              // CSC parameters setup for layer 0
    Parser_ExecuteCSC0,            // CSC on layer 0
    Parser_ExecuteCSC0Done,        // CSC on layer 0 is complete
    Parser_SetupCSC1,              // CSC parameter setup for layer 1
    Parser_ExecuteCSC1,            // CSC on layer 1
    Parser_ExecuteCSC1Done,        // CSC on layer 1 is complete
    Parser_Lumakey,                // lumakey
    Parser_ProcessLayer,           // process layer 0 + layer 1
    Parser_ProcessLayerDone,       // processing is complete
    Parser_DualOutput,             // dual output
    Parser_Rotation,               // apply post composition rotation
    Parser_DestSurfIndex,          // destination surface index
    Parser_Colorfill,              // applying colorfill
    Parser_WriteOutput,            // write output
    Parser_End,                    // end dynamic linking

    // This is used for custom states
    Parser_Custom,  // Custom state

    // Number of states - keep this at the end
    Parser_Count
} Kdll_ParserState;

typedef enum tagKdll_RuleID
{
    // Parser/Patch Control
    RID_Op_EOF      = -2,  // End of search table
    RID_Op_NewEntry = -1,  // New search entry

    // Simple Match Rules - 0x0000 to 0x0100
    RID_IsTargetCspace = 0,    // Match target color space
    RID_IsLayerID,             // Match Layer ID
    RID_IsLayerFormat,         // Match Layer Format
    RID_IsParserState,         // Match Parser State
    RID_IsRenderMethod,        // Match rendering mode, media object or media walker
    RID_IsShuffling,           // Match Shuffling
    RID_IsDualOutput,          // Match Dual Output
    RID_IsLayerRotation,       // Match Rotation
    RID_IsRTRotate,            // Match if RT rotates
    RID_IsSrc0Format,          // Current Src0 source (surface) format
    RID_IsSrc0Sampling,        // Current Src0 sampling mode
    RID_IsSrc0Rotation,        // Match Layer0 Rotation
    RID_IsSrc0ColorFill,       // Current Src0 Colorfill flag
    RID_IsSrc0LumaKey,         // Current Src0 LumaKey flag
    RID_IsSrc0Procamp,         // Match Src0 Procamp flag
    RID_IsSrc0Coeff,           // Current Src0 CSC coefficients
    RID_IsSrc0Processing,      // Current Src0 processing mode
    RID_IsSrc0Chromasiting,    // Current Src0 Chromasiting mode
    RID_IsSrc1Format,          // Current Src1 source (surface) format
    RID_IsSrc1Sampling,        // Current Src1 sampling mode
    RID_IsSrc1LumaKey,         // Current Src1 LumaKey flag
    RID_IsSrc1SamplerLumaKey,  // Current Src1 Samper LumaKey flag
    RID_IsSrc1Procamp,         // Match Src1 Procamp flag
    RID_IsSrc1Coeff,           // Current Src1 CSC coefficients
    RID_IsSrc1Processing,      // Current Src1 processing mode
    RID_IsSrc1Chromasiting,    // Current Src1 Chromasiting mode
    RID_IsLayerNumber,         // Current Layer number
    RID_IsQuadrant,            // Current Quadrant
    RID_IsCSCBeforeMix,        // CSC needed before Mix
    RID_IsTargetFormat,        // Render Target Format
    RID_Is64BSaveEnabled,      // Indicate whether 64B save kernel could be used
    RID_IsTargetTileType,      // Render Target Tile Type
    RID_IsProcampEnabled,      // Match Procamp
    RID_IsSetCoeffMode,        // Set CSC coefficients mode
    RID_IsConstOutAlpha,       // Match alpha fill mode
    RID_IsDitherNeeded,        // Whether dithering needed
    RID_IsScalingRatio,        // Current scaling ratio
    // Extended Match Rules - 0x0100 to 0x01ff

    // Simple Set Rules - 0x0200 to 0x02ff
    RID_SetTargetCspace = 512,  // Set target color space
    RID_SetParserState,         // Set Parser State
    RID_SetSrc0Format,          // Set Src0 source format
    RID_SetSrc0Sampling,        // Set Src0 sampling mode
    RID_SetSrc0Rotation,        // Set Src0 rotation
    RID_SetSrc0ColorFill,       // Set Src0 Colorfill
    RID_SetSrc0LumaKey,         // Set Src0 LumaKey
    RID_SetSrc0Procamp,         // Set Src0 Procamp flag
    RID_SetSrc0Coeff,           // Set Src0 CSC coefficients
    RID_SetSrc0Processing,      // Set Src0 Processing mode
    RID_SetSrc1Format,          // Set Src1 source format
    RID_SetSrc1Sampling,        // Set Src1 sampling mode
    RID_SetSrc1Rotation,        // Set Src1 rotation
    RID_SetSrc1LumaKey,         // Set Src1 LumaKey
    RID_SetSrc1SamplerLumaKey,  // Set Src1 Sampler LumaKey
    RID_SetSrc1Procamp,         // Set Src1 Procamp flag
    RID_SetSrc1Coeff,           // Set Src1 CSC coefficients
    RID_SetSrc1Processing,      // Set Src1 Processing mode
    RID_SetKernel,              // Set Kernel
    RID_SetNextLayer,           // Set Next Layer
    RID_SetPatchData,           // Set Patch Data to use
    RID_SetQuadrant,            // Set Quadrant
    RID_SetCSCBeforeMix,        // Set CSC flag before Mix

    // Extended Set Rules - 0x0300 to 0x03ff
    RID_SetPatch = 768,  // Set Patch block
} Kdll_RuleID;

typedef enum tagKdll_Logic
{
    Kdll_None,
    Kdll_Or,
    Kdll_Not,
} Kdll_Logic;

// Dynamic linking rule entry
typedef struct tagKdll_RuleEntry
{
    Kdll_RuleID id : 16;     // LSB
    int         value : 16;  // MSB
    Kdll_Logic  logic;
} Kdll_RuleEntry;

typedef struct tagKdll_RuleEntrySet
{
    const Kdll_RuleEntry *pRuleEntry;        // Pointer to the first meaningful rule of the set
    uint32_t              iGroup : 8;        // Group (default, custom, non-overridable)
    uint32_t              iMatchCount : 12;  // Size of Match Rules (including variable length rules)
    uint32_t              iSetCount : 12;    // Size of Set Rules (including variable length rules)
} Kdll_RuleEntrySet;

// Structure that defines a set of procamp parameters
typedef struct tagKdll_Procamp
{
    bool  bEnabled;         // Procamp Enabled/Disabled
    int   iProcampVersion;  // Procamp parameters version
    float fBrightness;      // Brightness : range = -100.0 - 100.0; default = 0.0; step = 0.1
    float fContrast;        // Contrast   : range =    0.0 -  10.0; default = 1.0; step = 0.01
    float fHue;             // Hue        : range = -180.0 - 180.0; default = 0.0; step = 0.1
    float fSaturation;      // Saturation : range =    0.0 -  10.0; default = 1.0; step = 0.01
} Kdll_Procamp;

// Structure that defines CSC+PA conversion matrix
typedef struct tagKdll_CSC_Matrix
{
    int bInUse : 1;  // Matrix is in use and valid (LSB)
    int : 3;
    Kdll_CoeffID iCoeffID : 4;     // Coeffient set
    VPHAL_CSPACE SrcSpace : 8;     // Source Color Space
    VPHAL_CSPACE DstSpace : 8;     // Destionation Color Space
    int          iProcampID : 8;   // Procamp parameter set (-1 if no Procamp) (MSB)
    int          iProcampVersion;  // Last procamp version (to recalculate matrix)
    short        Coeff[12];        // CSC kernel coeff: [Y'/R']   [0  1  2]   [Y/R]   [ 3]
                                   //                   [U'/G'] = [4  5  6] * [U/G] + [ 7]
                                   //                   [V'/B']   [8  9 10]   [V/B]   [11]
} Kdll_CSC_Matrix;

// Structure that defines a full set of CSC or CSC+PA parameters to be used by a combined kernel
typedef struct tagKdll_CSC_Params
{
    VPHAL_CSPACE    ColorSpace;                 // Selected Color Space
    Kdll_CSC_Matrix Matrix[DL_CSC_MAX];         // CSC conversion matrix (3x3 + 1x3)
    uint8_t         MatrixID[DL_CSC_MAX];       // Coefficient allocation array
    uint8_t         PatchMatrixID[DL_CSC_MAX];  // CSC Matrix ID
    uint8_t         PatchMatrixNum;             // CSC Matrix Number
} Kdll_CSC_Params;

// Structure that defines a compositing layer
typedef struct tagKdll_FilterEntry
{
    // Current layer
    Kdll_Layer      layer;            // source layer       (Layer identification - Bg, Main, Sub, Gfx, ...)
    MOS_FORMAT      format;           // source format      (Pixel/Sampling Format - ARBG, NV12, YUY2, ...)
    VPHAL_CSPACE    cspace;           // source color space (BT709, BT601, xvYCC709, xvYCC601, sRGB, ...)
    Kdll_Sampling   sampler;          // sampling mode      (AVS, Scaling, ColorFill, Luma Keying, ...)
    int32_t         colorfill : 16;   // colorfill          (true/false)
    int32_t         lumakey : 16;     // Luma key           (true/false)
    int32_t         samplerlumakey;   // Sampler Lumakey    (true/false)
    Kdll_Processing process;          // processing mode    (Compositing, Constant Blending, Source Blending, ...)
    int             procamp;          // index to procamp parameters (-1 of Procamp disabled)
    int             matrix;           // index to CSC matrix entry   (-1 if CSC not required)
    VPHAL_ROTATION  rotation;         // rotation angle
    MOS_TILE_TYPE   tiletype;         // Tiling Type
    bool            dualout;          // dual output mode
    bool            bWaEnableDscale;  // enable DScale kernels for sampler-unrom issue
    bool            bEnableDscale;    // always enable DScale Kernels
    int32_t         chromasiting;     // chromasiting        (-1 if Chromasiting is disabled)

    // This flag is used to select between kernels:
    // Save_RGB         or     Save_ARGB
    // Save_R10G10B10   or     Save_R10G10B10A2
    // Save_VUYA        or     Save_SrcVUYA
    bool bFillOutputAlphaWithConstant;
    bool bIsDitherNeeded;

    Kdll_Scalingratio      ScalingRatio;
    Kdll_RenderMethod      RenderMethod;
    Kdll_SetCSCCoeffMethod SetCSCCoeffMode;
} Kdll_FilterEntry, *PKdll_FilterEntry;

// Structure that defines a compositing filter
typedef Kdll_FilterEntry Kdll_FilterDesc[DL_MAX_SEARCH_FILTER_SIZE];

typedef struct tagKdll_PatchBlock
{
    uint32_t DstOffset : 16;
    uint32_t SrcOffset : 8;
    uint32_t BlockSize : 8;
} Kdll_PatchBlock;

// Kernel Patching data
typedef struct tagKdll_PatchData
{
    // Data for patching
    int     iPatchDataSize;                // Size of Patch data block
    uint8_t Data[DL_MAX_PATCH_DATA_SIZE];  // Patch data

    // Patches
    int             nPatches;
    Kdll_PatchBlock Patch[DL_MAX_PATCH_BLOCKS];
} Kdll_PatchData;

typedef struct tagKdll_LinkData
{
    uint32_t iKUID : 16;     // Kernel Unique ID
    uint32_t iLabelID : 16;  // Label ID
    uint32_t bExport : 1;    // 0 - import; 1 - export;
    uint32_t bResolved : 1;  // 0 - unresolved; 1 - resolved;
    uint32_t dwOffset : 20;  // Offset in DWORDs
    uint32_t bInline : 1;    // 0 - function; 1 - inline;
    uint32_t : 9;            // MBZ
} Kdll_LinkData;

typedef struct tagKdll_Symbol
{
    uint32_t       dwSize;
    uint32_t       dwCount;
    Kdll_LinkData *pLink;
} Kdll_Symbol;

typedef struct tagKdll_CacheEntry
{
    // Kernel binary
    uint8_t *pBinary;  // kernel binary
    int      iSize;    // kernel size

    // Component kernel information
    int            iKUID;   // kernel unique id (static kernel)
    const char *   szName;  // kernel name
    int            nLink;   // Number of imports/exports
    Kdll_LinkData *pLink;   // Kernel imports/exports

    // Combined kernel information
    uint16_t          wHashEntry;        // hash table entry
    int               iFilterSize;       // kernel filter size
    Kdll_FilterEntry *pFilter;           // kernel filter description
    Kdll_CSC_Params * pCscParams;        // kernel CSC parameters
    VPHAL_CSPACE      colorfill_cspace;  // intermediate color space for colorfill

    // Cache control
    int      iKCID;      // kernel cache id (dynamically linked kernel)
    uint32_t dwLoaded;   // kernel loaded flag
    uint32_t dwRefresh;  // refresh counter (for expiration control)

    struct tagKdll_CacheEntry *pNextEntry;  // Next cache entry;
} Kdll_CacheEntry;

typedef struct tagKdll_KernelCache
{
    int              iCacheMaxEntries;  // Max number of entries
    int              iCacheEntries;     // Current number of cache entries
    int              iCacheSize;        // Cache buffer size
    int              iCacheFree;        // Cache buffer free
    int              iCacheID;          // Next kernel cache ID
    Kdll_CacheEntry *pCacheEntries;     // Array of kernel cache entries
    uint8_t *        pCache;            // Cache (binary data)
    int              nExports;          // Exports count
    Kdll_LinkData *  pExports;          // Exports table
} Kdll_KernelCache;

//--------------------------------------------------------------
// Kernel Hash table
//--------------------------------------------------------------
typedef struct tagKdll_KernelHashEntry
{
    uint16_t          next;         // Next entry with same 8-bit hash + 1 (0 is null)
    uint32_t          dwHash;       // 32-bit hash value (FNV-1a hash)
    int               iFilter;      // Filter size
    Kdll_FilterEntry *pFilter;      // Filter for matching
    Kdll_CacheEntry * pCacheEntry;  // Pointer to kernel cache entry
} Kdll_KernelHashEntry;

typedef struct tagKdll_KernelHashTable
{
    uint16_t             wHashTable[256];                     // 256 hashes (1 based index)
    uint16_t             pool;                                // first in pool (1 based index)
    uint16_t             last;                                // last in pool (for releasing)
    Kdll_KernelHashEntry HashEntry[DL_MAX_COMBINED_KERNELS];  // Hash table entries
} Kdll_KernelHashTable;

//--------------------------------------------------------------
// Dynamic linking state
//--------------------------------------------------------------
typedef struct tagKdll_State *PKdll_State;
typedef struct tagKdll_SearchState *PKdll_SearchState;

typedef struct tagKdll_State
{
    int      iSize;        // Size of DL buffer
    uint32_t dwRefresh;    // Refresh counter (for garbage collection)
    bool     bEnableCMFC;  // Flag to enable CMFC

    // Default kernel component cache and rule table
    Kdll_KernelCache      ComponentKernelCache;  // Component kernels cache
    const Kdll_RuleEntry *pRuleTableDefault;     // Default Dll rules (internal)

    // CMFC kernel fcpatch cache
    Kdll_KernelCache CmFcPatchCache;  // CMFC kernel fcpatch cache

    // Custom kernel component cache and rule table
    Kdll_KernelCache *    pCustomKernelCache;  // Custom kernel cache
    const Kdll_RuleEntry *pRuleTableCustom;    // Custom Dll rules (external)

    // Combined rule lookup table
    Kdll_RuleEntrySet *pSortedRules;  // Sorted rule table

    Kdll_RuleEntrySet *pDllRuleTable[Parser_Count];  // Rule acceleration table (one entry for each Parser State)
    int                iDllRuleCount[Parser_Count];  // Rule count (number of entries for each Parser State)

    // Combined kernel cache and hash table
    Kdll_KernelCache     KernelCache;      // Output kernel cache
    Kdll_KernelHashTable KernelHashTable;  // Hash table for resulting kernels

    Kdll_Procamp *pProcamp;      // Array of Procamp parameters
    int32_t       iProcampSize;  // Size of the array of Procamp parameters

    // Colorfill
    VPHAL_CSPACE colorfill_cspace;  // Selected colorfill Color Space by Kdll

    // Start kernel search
    void (*pfnStartKernelSearch)(PKdll_State pState,
        PKdll_SearchState                    pSearchState,
        Kdll_FilterEntry *                   pFilter,
        int32_t                              iFilterSize,
        uint32_t                             uiIs64BInstrEnabled);

    // Find best ColorSpace to use internally, allocate/calculate CSC matrices and arguments
    bool (*pfnSetupCSC)(PKdll_State pState,
        PKdll_SearchState           pSearchState);

    // Find rule that matches the current search state
    bool (*pfnFindRule)(PKdll_State pState,
        PKdll_SearchState           pSearchState);

    // Update state based on rule
    bool (*pfnUpdateState)(PKdll_State pState,
        PKdll_SearchState              pSearchState);

    // Search Kernel based for a given
    bool (*pfnSearchKernel)(PKdll_State pState,
        PKdll_SearchState               pSearchState);

    // Build current best match kernel
    bool (*pfnBuildKernel)(PKdll_State pState,
        PKdll_SearchState              pSearchState);

    // Map matrix to kernel CSC
    bool (*pfnMapCSCMatrix)(Kdll_CSCType type,
        const float *                    matrix,
        short *                          coeff);
#if EMUL
    // Token to be passed back in Callbacks
    void *pToken;

    // Print Component Kernel
    void (*pfnCbListKernel)(void *token,
        const char *              szKernel);

    // State update
    void (*pfnCbSearchSate)(void *token,
        int32_t                   reason,
        PKdll_SearchState         pSearchState);
#endif
} Kdll_State;

typedef struct tagKdll_SearchState
{
    // Kernel DLL state
    Kdll_State *pKdllState;  // Kernel DLL State

    // Filter and CSC parameters
    Kdll_FilterDesc Filter;              // Output Filter, with CSC data
    int             iFilterSize;         // Size of the filter
    Kdll_CSC_Params CscParams;           // CSC parameters
    bool            bCscBeforeMix;       // flag to identify if CSC needed before Mix
    Kdll_Shuffling  ShuffleSamplerData;  // Gen7+ Shuffle sampler output

    // RT Rotate
    bool bRTRotate;

    // Procamp
    bool bProcamp;

    // Search output
    Kdll_RuleEntrySet *pMatchingRuleSet;  // Pointer to the matching rule set

    // Kernels
    int KernelCount;                // # of kernels
    int KernelID[DL_MAX_KERNELS];   // Array of kernel ids
    int KernelGrp[DL_MAX_KERNELS];  // Array of kernel groups
    int PatchID[DL_MAX_KERNELS];    // Array of patches

    // Kernel patches
    int            PatchCount;               // Number of patches
    Kdll_PatchData Patches[DL_MAX_PATCHES];  // Kernel patches

    // Current state
    Kdll_FilterEntry *pFilter;       // Current filter entry
    Kdll_ParserState  state;         // Parser state
    VPHAL_CSPACE      cspace;        // Destination color space
    int               quadrant;      // Current quadrant
    int               layer_number;  // Current layer number

    // Src0 state
    MOS_FORMAT      src0_format;     // Src0 source format
    Kdll_Sampling   src0_sampling;   // Src0 sampling mode
    int32_t         src0_colorfill;  // Src0 colorfill flag
    int32_t         src0_lumakey;    // Src0 luma key
    int32_t         src0_procamp;    // Src0 procamp
    Kdll_CoeffID    src0_coeff;      // Src0 CSC coefficiants
    Kdll_Processing src0_process;    // Src0 processing mode
    VPHAL_ROTATION  src0_rotation;   // Src0 Rotate

    // Src1 state
    MOS_FORMAT      src1_format;          // Src1 source format
    Kdll_Sampling   src1_sampling;        // Src1 sampling mode
    int32_t         src1_lumakey;         // Src1 luma key
    int32_t         src1_samplerlumakey;  // Src1 sampler luma key
    int32_t         src1_procamp;         // Src1 procamp
    Kdll_CoeffID    src1_coeff;           // Src1 CSC coefficients
    Kdll_Processing src1_process;         // Src1 processing mode
    VPHAL_ROTATION  src1_rotation;        // Src1 Rotate

    // Render Target Format
    MOS_FORMAT target_format;  // Render Target format

    bool          b64BSaveEnabled;  // Whether to use 64B save kernel
    MOS_TILE_TYPE target_tiletype;  // Render Target Tile Type

    // Dynamic linking
    int           KernelSize;                  // Kernel Size
    int           KernelLeft;                  // Remaining size
    Kdll_Symbol   KernelLink;                  // DL symbols for linking
    Kdll_LinkData LinkArray[DL_MAX_SYMBOLS];   // Import/Export symbols for dynamic linking
    uint8_t       Kernel[DL_MAX_KERNEL_SIZE];  // Output Kernel
} Kdll_SearchState;

void KernelDll_ModifyFunctionPointers_Next(Kdll_State *pState);

bool KernelDll_IsCspace(
    VPHAL_CSPACE cspace,
    VPHAL_CSPACE match);

void KernelDll_GetCSCMatrix(
    Kdll_CSpace src,
    Kdll_CSpace dst,
    float *     pCSC_Matrix);

#ifdef __cplusplus
}
#endif

#endif // __HAL_KERNELDLL_NEXT_H__
